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For the Fallout 2 creatures sometimes called "aliens", see wanamingo.
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This is an overview article which contains background information and cross-game comparisons. For game-specific information and stats, see the articles linked on the right.
Gameplay articles
Fallout 3Alien Gametitle-FO3 MZ
Fallout: New VegasAlien Perk wild wasteland
Fallout 4Alien
Fallout 76Alien

Aliens, as known as extraterrestrials, are several species that have come to Earth for various purposes. Among them are the zetan aliens as well as several unknown species.


The only known purpose of the zetans is implied to be experimentation and study on human subjects. The zetans' interactions with Earth date back centuries before the Great War, but it is unknown if the other species also visited around this time or came later. For the majority of this time, aliens were unknown to humanity and the realm of science fiction. But after the mysterious disappearance, or rather abduction, of the USSA space capsule Clarabella 7 and the pilot astronaut Colonel Hartigan during the 1960s Space Race, the existence of aliens became nationally recognized.

It is said that alien technology was the basis of many of the Enclave's more exotic and impressive weaponry and robotics.[1] Even toy manufacturers such as Wilson Automatoys weren't immune to these accusations[1] and the United States government, which was said to keep its alien specimens and technology mostly in Area 51 (like a flying saucer that was later recaptured by aliens but crashed in California, instantly killing the two pilots).

The Brotherhood of Steel[2] around 2161 and the Shi[3] around 2241 encountered the bodies of aliens or their spaceships. By extension, the Capital Wasteland Brotherhood of Steel have a moderate amount of alien power cells kept in the Citadel's armory[4] and the Brotherhood Outcasts also have some alien power cells at Fort Independence. Also before 2277, an alien body of unknown species was discovered in Fort Bannister,[1]. And the Enclave recovered an alien blaster and some alien power cells in the armory of the mobile base crawler at Adams Air Force Base.

Some of the advanced human technologies were created by using the alien technology like the AI project number 59234: Skynet,[5] created in the 2050s who manages the entire Sierra Army Depot, as well as the device blocking telepathic and psychic commands, the allegedly alien psychic nullifier.[6]


Perk wild wastelandThe following is based on the Wild Wasteland trait and has not been confirmed by canon sources.
Perk wild wastelandEnd of information based on the Wild Wasteland trait.
Creation Club logoThe following is based on Creation Club content and has not been confirmed by canon sources.
  • In the Creation Club quest Over the Moon, the Sole Survivor encounters a second alien craft abducting a brahmin, along with two hostile aliens with unique weapons.
Creation Club logoEnd of information based on Creation Club content.

Crashed shipsEdit

Six alien ships are known to have crashed in the United States:

  • A flying saucer in a special encounter in California. (Fallout)
  • A recon craft named Theta in the Capital Wasteland. (Fallout 3)
  • Another recon craft that crashed and exploded on contact with the ground in a random encounter near the Lone Wanderer in the Capital Wasteland. (Fallout 3)
  • At the Citadel, there is information on a terminal (in the A-Ring) about another ship of unknown type codenamed "Palandine" that crashed in a heavily wooded area near Hagerstown, Maryland which the government was not able to reach. (Fallout 3)
Perk wild wastelandThe following is based on the Wild Wasteland trait and has not been confirmed by canon sources.
Perk wild wastelandEnd of information based on the Wild Wasteland trait.



Robots and computersEdit


  • Flying saucer Gametitle-FO1 - Small ship with a saucer-shaped body used for fast operations that houses two pilots. The only known flying saucer is the one that crashed in California.
  • Mothership Gametitle-FO3 MZ - Large ship dedicated to long-term space travel and the study of other species. It's generally located in space. It houses a large crew of aliens and is commanded by a captain. The overall shape of the ship resembles a colossal saucer with another small disc-shaped section attached to the bottom. Known motherships are Zeta and the unnamed mothership which arrives after Zeta's bridge is captured by the Lone Wanderer.
  • Recon craft Gametitle-FO3 Gametitle-FNV - Small ship with a disc-shaped rear body used for stealth operations that houses only one pilot. Known recon craft is Theta, another which exploded and sprayed in the Firelance event, and a possible unnamed craft in the Mojave Wasteland.


  • Abominations Gametitle-FO3 MZ - Biological weapons created from humans with alien DNA.
  • Alien biogel Gametitle-FO3 MZ - Ingestible curative gelatin-like liquid which accelerates organic tissue's regeneration processes.
  • Healing archway Gametitle-FO3 MZ - Care generator restoring health, removing all radiation, clearing any drug addiction and restoring crippled limbs.


Other devicesEdit


  • Killing alien workers in the Fallout 3 add-on Mothership Zeta will give bad Karma, probably because they are classified as civilians.
  • The creatures that are known as wanamingos are referred to as aliens, but are actually the result of genetic engineering via the Forced Evolutionary Virus by humans and have nothing to do with aliens.
  • The Lone Wanderer is the only protagonist so far to have been abducted by the aliens.
  • In Nuka-World, Dick Hubbell is established as having had direct contact with aliens, which influenced the formation of Hubology.[7]


In Fallout and Fallout 2, they only appear in the form of skeletons. The crashed recon craft Theta appears in Fallout 3 with the first dead alien, and the aliens are the primary antagonists of the Fallout 3 add-on Mothership Zeta. They also make an appearance in Fallout: New Vegas if the Wild Wasteland trait is active. If this is the case, then they are spotted in the northernmost part of the map near Brooks tumbleweed ranch. In Fallout 4 they appear during an event in which a UFO crashes to the ground south of the Beantown Brewery in the Commonwealth. In Fallout Shelter they appear during the quest Humans Like Us, where they use optical camouflage to look like male human beings.

Behind the scenesEdit

50 Vault-Tec C.E.O.The following is based on unverified behind the scenes information and has not been confirmed by canon sources.
  • The aliens resemble greys, beings commonly described in alien abduction accounts. These aliens have been commonly reported since the 1950s. Later, the Greys became more mainstream when science fiction began depicting them. These kinds of aliens have come to represent the "stereotypical" alien. The name zetan may refer to the star system Zeta Reticuli,[8] a real-world star system seen in a number of science fiction stories,[9] such as the Alien franchise. It was also rumored to be the origin of the aliens[10] who allegedly abducted Barney and Betty Hill in 1961, which was the first widely publicized report of alien abduction.[11]
50 Vault-Tec C.E.O.End of information based on unverified behind the scenes information.
  • During the Fallout 4 encounter, a zetan recon craft is seen crashed into the earth, with its sole pilot injured, and hiding within a nearby cave. Upon discovering the still alive zetan, it is seen without a helmet on and is strong enough to defend itself against the Sole Survivor. While earlier appearances may have lead to the assumption that zetan aliens would need some kind of breathing equipment, whenever exposed to Earth's atmosphere, it is now clear that they, at least for a short time, are capable of surviving without such technology.



  1. 1.0 1.1 1.2 Fallout 3 Official Game Guide Game of the Year Edition p.45: "Aliens
    Once thought to be covered up by a government conspiracy and believed only by "crackpot" groups such as the Quaere Verum, evidence of extraterrestrial life can be traced back throughout human history, but became nationally recognized after the mysterious disappearance of the Clarabella 7 space pod during the 1960s Space Race. It is said that Alien technology was the basis of many of the Enclave's more exotic and impressive weaponry and robotics, and even toy manufacturers such as Wilson Automatoys weren't immune to these accusations. Recently, after the discovery of an Alien body in Fort Bannister, the shocking truth was revealed. The Aliens are not only real and alive, but they’re back. And they're pissed."
    (Fallout 3 Official Game Guide faction profiles)
  2. Scribe: "{111}{}{I've seen an alien space ship before.}"
  3. The Chosen One: "{176}{}{Xeno program.}"
    Shi Emperor: "{182}{}{"The subject on which we had hoped to establish a series of meaningful experiments has disappeared, presumed either destroyed or stolen by the Hubologists. Further inquiries have proven fruitless. Until such time as further specimens are obtained, this database will remain inoperative." - Dr. Sheng}"
  4. Seen if the player character chooses to destroy the Citadel during Who Dares Wins in Broken Steel add-on of Fallout 3
  5. Skynet: "{207}{}{Skynet was conceived and developed in the year 2050. Through the use of alien technology a new thinking computer was perfected. In the year 2081, Skynet became self-aware. In 2120 Skynet was given a new set of instructions and then abandoned by the Makers.}"
  6. Fallout Official Survival Guide p.128: "Psychic Nullifier: A strange device, possibly the product of an alien technology. It blocks telepathic or psychic commands."
    Note: The game itself does not state anything of the sort.
  7. Hub's alien blaster
  8. Zeta Reticuli on Wikipedia
  9. Zeta Reticuli in Fiction on Wikipedia
  10. The Hill Starmap on Wikipedia
  11. The Hill Abduction on Wikipedia
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